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    • 10. 发明专利
    • Method for refilling inside of cable sheath of existing prestressed concrete (pc) structure with grout
    • 使用GROUT将现有预制混凝土(PC)结构的电缆衬里内部修补的方法
    • JP2010222809A
    • 2010-10-07
    • JP2009069584
    • 2009-03-23
    • Pacific Consultants Co Ltdパシフィックコンサルタンツ株式会社
    • NARUI MAKOTOTOKUGAWA KAZUHIKOUENO TSUGIO
    • E04G21/12
    • PROBLEM TO BE SOLVED: To provide a method for refilling the inside of a cable sheath of an existing PC structure with grout, which enables complete refilling to be performed, without leaving an air lock, by a grout-unfilled portion in the sheath for insertion of a prestressing (PC) tendon in the existing PC structure. SOLUTION: In an air lock generation-expected position, there is the risk of having air trapped in the grout-unfilled portion 12 even by grout pressure injection performed by the grout pressure injection device 20, when the grout is pressurized and injected from a grout pressure injection port 13 by the grout pressure injection device 20 after the grout-unfilled portion 12 is decompressed. A branch passage, which is made of a vacuum pressure-resistant material and which communicates and branches off upward, is preprovided in the air lock generation-expected position; a vacuum pressure-resistant container 30 is attached to the branch passage; and the air in an air lock generation-expected portion and the grout around it are sucked in under suction pressure from the inside of the vacuum pressure-resistant container 30 immediately before the completion of the pressure injection of the grout by the grout pressure injection device. COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:为了提供一种用于用现有的PC结构的电缆护套内部填充灌浆的方法,其使得能够完全重新灌注而不留下空气锁,通过在 护套,用于在现有PC结构中插入预应力(PC)腱。 解决方案:在空气锁发生预期位置中,即使通过灌浆压力注射装置20执行的灌浆压力注入,当灌浆被加压和注入时,也存在将淤泥填充部分12中的空气捕获的风险 在灌浆 - 未填充部分12被减压之后,由灌浆压力注射装置20从灌浆压力注入口13排出。 一个分支通道由真空耐压材料制成并且向上连通和分支,在气锁产生预期位置被制备; 真空耐压容器30附接到分支通道; 并且气密生成预期部分中的空气和其周围的水泥浆在来自真空耐压容器30的内部的吸入压力下,在刚刚通过灌浆压力注入装置完成灌浆压力注入之前被吸入 。 版权所有(C)2011,JPO&INPIT